The FDA recently approved a new booster shot for COVID-19 and many people are still wondering what exactly we’re injecting into our bodies. Dr. William Schaffner, an infectious disease expert, breaks down the revolutionary technology and why we should feel safe going into this winter season. Learn More: https://radiohealthjournal.org/how-the-mrna-vaccine-has-revolutionized-infectious-disease-prevention Learn more about your ad choices. Visit megaphone.fm/adchoices